Home / 10,127.68-15,191.45-5,449.89

Finding the Fourth Proportional to 10,127.68, 15,191.45 and 5,449.89

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Solution

The fourth proportional to 10,127.68, 15,191.45 and 5,449.89 is: 8,174.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,127.68 : 15,191.45 = 5,449.89 : x
  2. Step 2: Convert to fraction form
    10,127.68/15,191.45 = 5,449.89/x
  3. Step 3: Cross multiply
    10,127.68x = 15,191.45 × 5,449.89
  4. Step 4: Simplify right side
    10,127.68x = 82,791,628.23
  5. Step 5: Solve for x
    x = 82,791,628.23/10,127.68
  6. Step 6: Final answer
    x = 8,174.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.